The tertian leap is a [[voice-leading techniques|voice-leading technique]] that involves two root position chords where the third of the first chord leaps to the third of the second chord. This technique is useful for changing between [[open spacing]] and [[closed spacing]]. **Example 1.** Tertian leap, I → IV. ![[example tertian leap I → IV.png]] ![[example tertian leap I → IV.mp3]] **Example 2.** Tertian leap, V → I. ![[example tertian leap V → I.png]] ![[example tertian leap V → I.mp3]]